Sources close to the governor told The Plain Dealer this morning that an official announcement is forthcoming.

Romney is in Ohio today, with a speech planned this afternoon at the closed National Gypsum drywall factory in Lorain. Kasich is not scheduled to appear at the event; he instead will meet with Honda executives in Marysville.

Kasich had said he would support his party's presidential nominee, and Romney essentially locked his inevitable grip on that title last week when Rick Santorum suspended his campaign. As such, the first-term governor's endorsement means little unless he marshals his own political network to organize for Romney across Ohio.